Fixed regression where backspace didn't work correctly on Gecko/Chrome.
Fixed regression where backspace didn't work correctly on Gecko/Chrome.

support-dot-com/tinymce,cclaerhout/tinymce,nbcp/tinymce,M4R7iNP/tinymce,Shopify/tinymce,henrythewasp/tinymce,TeamupCom/tinymce,nikolas/tinymce,tinymce/tinymce,Razzwan/tinymce,gencer/tinymce,simachewh/tinymce,simachewh/tinymce,FernCreek/tinymce,adaptiffdesigns/tinymce,widgetfactory/tinymce,shilpi230/tinymce,rxl194/tinymce,collective/tinymce,cclaerhout/tinymce,nikolas/tinymce,danielpunkass/tinymce,toxalot/tinymce,Razzwan/tinymce,tinymce/tinymce,dziemian007/tinymce,mplank/tinymce,FernCreek/tinymce,danielpunkass/tinymce,endjin/tinymce,leofeyer/tinymce,pmpl-5/tinymce,TeamupCom/tinymce,mplank/tinymce,fashionsun/tinymce,ETSI-CTI/TinySpecMCE,ikuchmin/tinymce,jtark/tinymce,nbcp/tinymce,bsuh/tinymce,1099511627776/tinymce,Kindling/tinymce,ChristophKaser/tinymce,sjbufton/tinymce,gabixdev/tinymce,ice8lue/tinymce,blakewallan/tinymce,kencheung/tinymce,ETSI-CTI/TinySpecMCE,fillabs/TinySpecMCE,sjbufton/tinymce,rednose-public/tinymce,howanghk/tinymce,leofeyer/tinymce,enfold/tinymce,support-dot-com/tinymce,sachgits/tinymce,gencer/tinymce,jashua212/tinymce,M4R7iNP/tinymce,fillabs/TinySpecMCE,ikuchmin/tinymce,gabixdev/tinymce,kencheung/tinymce,VioletLife/tinymce,aduth/tinymce,fhchina/tinymce,rxl194/tinymce,enfold/tinymce,Zimbra/tinymce,shilpi230/tinymce,Zimbra/tinymce,widgetfactory/tinymce,ice8lue/tinymce,Kindling/tinymce,MediehusetTek/tinymce,MediehusetTek/tinymce,jashua212/tinymce,danielpunkass/tinymce,danchr/tinymce,bsuh/tinymce,jtark/tinymce,endjin/tinymce,tinymce/tinymce,collective/tinymce,fhchina/tinymce,dziemian007/tinymce,rbecheras/tinymce,aduth/tinymce,henrythewasp/tinymce,fashionsun/tinymce,rbecheras/tinymce,howanghk/tinymce,rednose-public/tinymce,blakewallan/tinymce,1099511627776/tinymce,VioletLife/tinymce,FernCreek/tinymce,pmpl-5/tinymce,adaptiffdesigns/tinymce,sachgits/tinymce,ChristophKaser/tinymce,danchr/tinymce,toxalot/tinymce